/*
 * Copyright (c) 2023-2024 elsfs Authors. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.elsfs.cloud.common.core.utils;

import java.io.Serializable;
import java.util.List;
import org.springframework.util.CollectionUtils;

/**
 * 树形节点
 *
 * @param <T> 实体自己
 * @param <ID> id 类型
 */
public interface TreeNode<T extends TreeNode<T, ID>, ID> extends Comparable<T>, Serializable {

  ID getId();

  List<T> getChildren();

  default void addChild(T child) {
    getChildren().add(child);
  }

  default ID getParentId() {
    return null;
  }

  default boolean hasChild() {
    return !CollectionUtils.isEmpty(getChildren());
  }

  @Override
  default int compareTo(T o) {
    return 0;
  }
}
